Ancient local evolution of African mtDNA haplogroups in Tunisian Berber populations.
Identifieur interne : 000014 ( PubMed/Corpus ); précédent : 000013; suivant : 000015Ancient local evolution of African mtDNA haplogroups in Tunisian Berber populations.
Auteurs : Sabeh Frigi ; Lotfi Cherni ; Karima Fadhlaoui-Zid ; Amel Benammar-ElgaaiedSource :
- Human biology [ 1534-6617 ] ; 2010.
English descriptors
- KwdEn :
- MESH :
- chemical , genetics : DNA, Mitochondrial.
- geographic : Africa South of the Sahara, Tunisia.
- genetics : African Continental Ancestry Group.
- Emigration and Immigration, Genetics, Population, Haplotypes, Humans.
Abstract
Our objective is to highlight the age of sub-Saharan gene flows in North Africa and particularly in Tunisia. Therefore we analyzed in a broad phylogeographic context sub-Saharan mtDNA haplogroups of Tunisian Berber populations considered representative of ancient settlement. More than 2,000 sequences were collected from the literature, and networks were constructed. The results show that the most ancient haplogroup is L3*, which would have been introduced to North Africa from eastern sub-Saharan populations around 20,000 years ago. Our results also point to a less ancient western sub-Saharan gene flow to Tunisia, including haplogroups L2a and L3b. This conclusion points to an ancient African gene flow to Tunisia before 20,000 BP. These findings parallel the more recent findings of both archaeology and linguistics on the prehistory of Africa. The present work suggests that sub-Saharan contributions to North Africa have experienced several complex population processes after the occupation of the region by anatomically modern humans. Our results reveal that Berber speakers have a foundational biogeographic root in Africa and that deep African lineages have continued to evolve in supra-Saharan Africa.
DOI: 10.3378/027.082.0402
PubMed: 21082907
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pubmed:21082907Le document en format XML
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Therefore we analyzed in a broad phylogeographic context sub-Saharan mtDNA haplogroups of Tunisian Berber populations considered representative of ancient settlement. More than 2,000 sequences were collected from the literature, and networks were constructed. The results show that the most ancient haplogroup is L3*, which would have been introduced to North Africa from eastern sub-Saharan populations around 20,000 years ago. Our results also point to a less ancient western sub-Saharan gene flow to Tunisia, including haplogroups L2a and L3b. This conclusion points to an ancient African gene flow to Tunisia before 20,000 BP. These findings parallel the more recent findings of both archaeology and linguistics on the prehistory of Africa. The present work suggests that sub-Saharan contributions to North Africa have experienced several complex population processes after the occupation of the region by anatomically modern humans. Our results reveal that Berber speakers have a foundational biogeographic root in Africa and that deep African lineages have continued to evolve in supra-Saharan Africa.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21082907</PMID><DateCreated><Year>2010</Year><Month>11</Month><Day>18</Day></DateCreated><DateCompleted><Year>2011</Year><Month>02</Month><Day>22</Day></DateCompleted><DateRevised><Year>2011</Year><Month>04</Month><Day>18</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1534-6617</ISSN><JournalIssue CitedMedium="Internet"><Volume>82</Volume><Issue>4</Issue><PubDate><Year>2010</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Human biology</Title><ISOAbbreviation>Hum. Biol.</ISOAbbreviation></Journal><ArticleTitle>Ancient local evolution of African mtDNA haplogroups in Tunisian Berber populations.</ArticleTitle><Pagination><MedlinePgn>367-84</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.3378/027.082.0402</ELocationID><Abstract><AbstractText>Our objective is to highlight the age of sub-Saharan gene flows in North Africa and particularly in Tunisia. Therefore we analyzed in a broad phylogeographic context sub-Saharan mtDNA haplogroups of Tunisian Berber populations considered representative of ancient settlement. More than 2,000 sequences were collected from the literature, and networks were constructed. The results show that the most ancient haplogroup is L3*, which would have been introduced to North Africa from eastern sub-Saharan populations around 20,000 years ago. Our results also point to a less ancient western sub-Saharan gene flow to Tunisia, including haplogroups L2a and L3b. This conclusion points to an ancient African gene flow to Tunisia before 20,000 BP. These findings parallel the more recent findings of both archaeology and linguistics on the prehistory of Africa. The present work suggests that sub-Saharan contributions to North Africa have experienced several complex population processes after the occupation of the region by anatomically modern humans. Our results reveal that Berber speakers have a foundational biogeographic root in Africa and that deep African lineages have continued to evolve in supra-Saharan Africa.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Frigi</LastName><ForeName>Sabeh</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Laboratory of Molecular Genetics, Immunology, and Human Pathology, Faculty of Sciences of Tunis, University El Manar, 2092 Tunis, Tunisia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Cherni</LastName><ForeName>Lotfi</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Fadhlaoui-Zid</LastName><ForeName>Karima</ForeName><Initials>K</Initials></Author><Author ValidYN="Y"><LastName>Benammar-Elgaaied</LastName><ForeName>Amel</ForeName><Initials>A</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Hum Biol</MedlineTA><NlmUniqueID>0116717</NlmUniqueID><ISSNLinking>0018-7143</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004272">DNA, Mitochondrial</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><CommentsCorrectionsList><CommentsCorrections RefType="CommentIn"><RefSource>Hum Biol. 2010 Aug;82(4):385-93</RefSource><PMID Version="1">21082908</PMID></CommentsCorrections></CommentsCorrectionsList><MeshHeadingList><MeshHeading><DescriptorName UI="D017954" MajorTopicYN="N" Type="Geographic">Africa South of the Sahara</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D044383" MajorTopicYN="N">African Continental Ancestry Group</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004272" MajorTopicYN="N">DNA, Mitochondrial</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004641" MajorTopicYN="N">Emigration and Immigration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005828" MajorTopicYN="Y">Genetics, Population</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006239" MajorTopicYN="N">Haplotypes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014416" MajorTopicYN="N" Type="Geographic">Tunisia</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>11</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>11</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>2</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21082907</ArticleId><ArticleId IdType="doi">10.3378/027.082.0402</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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